Machine for making insulated magnetic coils



(No Model.) 4 Sheets- Sheet 1. C. E. LIPE. MACHINE POR'MA-KING INSULATED MAGNETIC GOILS. No. 473,123. Patented Apr. 19, 1892.

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0. E. LIPE. I MACHINE FOR MAKING INSULATED-MAGNETIC GOI-LS.

No. 473,123. Paxented Apr. 19, 1892-.

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0. .3. LIFE. MACHINE .FOR MAKING INSULATED MAGNETIC OOILS.

N0.4'73,123. Patented A pr.-19, 18.92.

NrTED STATES ATEN FFEC CHARLES E. LIFE, OF SYRACUSE, NElV YORK.

MACHINE FOR MAKING INSULATED MAGNETIC COILS.

SPECIFICATION forming part Of Letters Patent N0. 473,123, dated April 19, 1892.

Application filed October 8, 1890. $eria1 No. 367,433. (No model.)

To all whont it may concern.-

Be it known that I, CHARLES E. LIPE, of Syracuse, in the county of Onondaga, in the State of New York, have invented new and useful Improvements in Machines and Apparatus for Making Insulated Magnetic Coils, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact description.

My invention relates to machines and apparatus for making insulated coils, and especially to those in which insulating material is composed of mica wound in between the different successive layers and also between each and every successive coil as the same is wound.

My object is to improve the coil by more perfectly insulating the layers and convolutions,.and especially to preserve the full insulation, even under the great heat sometimes generated in its coil under the insulating material, and at the same time to wind it with an even tension and with tight convolutions by means of a tensional feed, and by means of a follower engaging with the wire as it is wound and pressing it tightly against the preceding convolution, and also trimming 0d the insulating material as it is wound in between the convolutions.

My invention consists in the several novel features of construction-and operation hereinafter described, and which are specifically set forth in the claims annexed.

It is constructed as follows, reference being had to the accompanying drawings, in which Figure l is a side elevation of the machine. Fig. 2 is a front elevation. Fig. 3- is a top plan showing the driving mechanism in horizontal section. Fig. 4 is a detail of the driving gear and worm and the feed-sprocket. Fig. 5 is a detail showing a vertical transverse section of the coil partly wound, and also showing how the insulating material, mica, or other non conducting mineral is placed between the coils and trimmed off.

' Fig. 6 shows details of the mica sheet having its lower face concaved, ready to be placed between the coil and the wire, and also showing the piece cut off and left between them. Fig. 7 is an elevation of the Winding-shaft,-

its driving-gear, and the feed-sprocket. Fig. 8 is a front elevation of the coil partly wound and being trimmed. Fig. 9 is a side elevation of the trimmer and presscr-bar detached. Fig. 0 is a longitudinal vertical section of the front end thereof. Fig. 11 is a side elevation of the presser-bar and trimmer for use in the angles or corners between the cheekpieces and coil being wound. Fig. 12 is an end view of the same. showing the knife in operation. Fig. 14 is a sectional detail showing how the insulating material is wound in and trimmed and the coil built up. Fig. 15 is a sectional elevation of the head-block in which the presser-bar and trimmer are mounted, showing in detail the automatic pressure-regulator to overcome inequalities in the thickness of the wire.

Fig. 16 is an end elevation of the same detached. Fig. 17 is a detached elevation of the mechanism for reversing the feed, showing the reversing gears 27 and 1 :9 in dotted lines. Fig. 18 is a horizontal sectional elevation in top plan on line .2 z in Fig. 1, the wheel 46 being shown free from section.

A is the body mounted upon a suitable base, and 1 is the bed. At one end of the bed a post 2 is erected, in which the winding-shaft -3 is journaled. The feed-sprocket 4 and drivegear 5 are secured upon one end of the shaft, and its outer end is reduced in size, as shown in Fig. 7, creating a shoulder 6, and 7 is alongitudinal groove cut in the shaft from the shoulder back toward the drive-gear. The drive-gear is shown in Fig. 1 as inclosed to keep out dust, &c.

On top of the post 2 I journal adrive-shaft transverse to the windingshaft, provided with a worm 8, mounted thereon by an ordinary spline and feather-way connection, leaving the shaft free to slide through the worm, further provided on its outer end with a pulley 9,loose on the shaft, and afriction-clutch comprising friction-rings 10, integral and concentric with the pulley and in either side thereof and flaring outwardly, and disks 11, secured upon the shaft and beveled to fit, the inner one being adapted to abut against the end of the sleevellwhen the shaft is drawn through it to bring the disks into contact, which is done by means of a short sleeve 13 Fig. 13 is an elevation loose upon the shaft, but connected thereto and provided with a circumferential groove 14, which receives the head of the lever 16, the lower end of which is connected to the treadle 17, by the depression of which the clutch is thrown into engagement, so that the rotation of the pulley rotates the worm, the drive-gear, and the winding-shaft as long as the pressure is maintained upon the treadle and ceases as soon as it is removed.

B is a slide mounted by a dovetailing-joint 18 upon a trackway a upon the face of the body and having a downward arm 19, provided with a socket 19, adapted to receive the ball 20 on the lever 21, pivotally mounted upon the bolt 22, adjustably mounted in the vertical slot 23 in the body, the bolt passing freely through the slot 24 in the lever.

In suitable bearings 25 on the bodyI mount a screw-shaft 26, upon the outer endof which the gear 46 is secured, and the screw passes through a threaded sleeve 2.), provided with a pin on its periphery which rides in the slot 150 in the lowerend of the lever 21. A sprocket-belt passing over the upper sprocket 4 and the lower one 28 rotates the screw, which, through the lever 48, causes the slide to traverse its trackway. The sprocket 28 is mount ed loosely upon a stud m, Fig. 2, projecting outward from the body. The lever 48 ispivoted upon the body of the machine.

A tool-post 3], of ordinary construction, is suitably mounted upon the slide, and 32 is the tool secured therein and projecting horizontally over nearly to the winding-shaft, and the traverse of the sleeve on the screw thus feeds the tool longitudinally along said winding-shaft. As shown in Figs. 9 and 10, this tool comprises a shank recessed in its front end to receive the bar and the spring behind it, a bevel-edged circular cutter 35, mounted upon the stud 36 on the end of the bar, a roller 37, also loose upon the stud, and a bow-spring 38, hearing against the end of the stud to hold the cutter and roller thereon.

Upon the winding-shaft I place the spool 39, comprising cheek-pieces 41 and washers 42, and a sleeve 40, of rubber or other nonconducting material, between the washers, and the cheek-pieces, washers, and sleeve are detachably held together upon said shaft by the nut upon the end thereof and one of said cheek-pieces abutting against the shoulder 6. The inner cheek-piece is provided with a groove in and longitudinal with its bore, (like unto a key-seat,) and when it is in position on the shaft and against said shoulder this groove will coincide with the groove 7, so that when the end of the wire is pushed through the groove in the cheek-piece it will enter the groove 7, and thus be held by these grooves while the coil is being wound. The wire 43, of any desired quadrilateral form in crosssection, is wound direct from the coil. The form shown in the drawings is four sided, having its top and bottom parallel and of unequal length, the sides tapering toward each other from top to the bottom and when wound the bottom is innermost. The end of the wire is held by tucking the end into the groove 7, as shown in Fig. 3. The tool-post is ad usted in the slide, so that the roller bears against the edge of the wire with the cutter bearing against the outer face thereof, when,w1th the rotation of the winding-shaft, the wire is wound helically upon the spool. I commonly use sheet-mica as the insulating material and cover the rubber sleeve therewith before the winding begins and wind the wire onto it. I also place pieces of mica 7) between the first coil of wire and the check of the spool on that end, and as the spool rotates the wire rotates the roller, and is thereby forced tightly against the mica and the roller follows, and being also rotated by its contact with the wire shears oil? the mice close to the wire. Then as the winding continues the workman inserts the mica between the coils, as shown in Fig. 5, and they are successively sheared oil, leaving a strip 0 of mica between the sides of the wire. (See Fig. 6.) .Vhen I have wound 'ncarly across to the other cheek-piece of the spool, I remove the tool shown in Figs. 9 and 10, which cannot work up into that corner, and insert into the tool-post the other tool, (shown in Figs. 11, 12, and 13,) which stands vertically therein and is provided with a projecting knife which will shear the mica in that corne This knife 44 fits in a groove in the end of the tool-body and is adapted to slide therein, and 45 is a spring bearing against its inner end and operating to hold its end in engagement with the wire, so that its cutting-edge will shear off the mica close to the wire. sulated, and sheared clear across the spool, I wrap it with mica in sheets. I then change the presser-bar and shearer, putting in the roll and roll-cutter.

The gear 46 is mounted upon the outerend of the feed-screw 26.

The lever 48 is pivoted upon a stud 47, projecting from the frame A, and is provided with a T-head having arbor-studs m and n, projecting outwardly therefrom. Upon the arbor m I loosely mount the sprocket-gear 2S, and upon the outer face thereof I secure the spur-gear 27, and 49 is another like gear of the same size mounted loosely upon the arbor n and in mesh with the gear 27.

In Fig. 17 I show the gear 49 in mesh with the gear 46, so that the rotation of the sprocket 28 and gear 27 will rotate the gear 49, and this will rotate the gear 46 and the feed-screw 26 in one direction, the lever 48 being depressed. To reverse the feed, I raise the lever 48, swinging the gear 49 out of mesh with the gear 46 and the gear 27 into mesh with the gear 46, which will cause the feed-screw 26 to rotate in the opposite direction, thus changing the traverse of the feed-nut 29. The catch 50 looks the lever 48 in either position.

The tool-post 31 is loosely mounted in a dovetailing groove in the top of the slide B hen one layer of wire is wound, in

and adapted to traverse said groove to some extent, but is not adjustable nor secured therein, except by means of the pins 52, inserted through the walls of the groove and across the groove, which pins fit loosely in deep grooves 51, cut horizontally across the sides of the tool-post. Springs 53 are mounted in the dovetailing groove and bear upon each side of the tool-post, which, while they permit the tool-post to move laterally in its seat in the slide whenever lateral pressure is produced upon the bracket 32, as by the roller 37 thereon, passing over inequalities in the surface of the wire, yet said springs will always cause said post to return to its normal position, so that through said springs the pressure-bar always maintains a yielding force against the edge of the wire.

IVhen the coil is wound the desired size, I remove the retaining-nut and washers and slip it, with its rubber sleeve, oif from the Winding-shaft, securing the ends of the Wire in any ordinary Way.

What I claim as my invention, and desire to secureby Letters Patent, is

1. In a machine for making insulated magnetic coils, the combination, with the winding-shaft and means for rotating it, of the tool comprising a shank, a stud upon its outer end, a bevel-edged shearing-cutter upon the stud, and a roller on the same stud in front of the cutter, and a tool-post carrying said tool.

2. In a machine for making insulated magnetic coils, the combination, with the winding-shaft and means for rotating it, of a tool comprising a shank, a pressure-roller, and a shearing-cutter mounted contiguous to the winding-shaft.

3. In a machine for makinginsulated ma netic coils, the combination, with the winding-shaft and means for rotating it, of a tool comprising a shank, a pressure-roller, and a shearing-cutter mounted contiguous to the winding-shaft, a slide carrying the tool, and means for feeding the tool along the windingshaft.

4. In a machine for making insulated magnetic coils, the combination, with the winding-shaft and means for rotating it, of a tool comprising a shank,a shearing-cutter mounted upon its end, a slide carrying the tool, and means for feeding the tool toward or from or along the winding-shaft.

-5. In a machine for making insulated magnetic coils, the combination, with the windingshaft and means for rotating it, of a tool comprising a shank recessed in its front end, a bar mounted in the recess, and a shearingcutter mounted thereon, and a spring in the recess behind the bar.

6. In a machine for making magnetic coils, the combination, with the Winding-shaft and means for rotating it, of a tool comprising a shank recessed in its front end, a bar mounted in the recess, a shearing cutter mounted thereon, a spring in the recess behind the bar, and a pressure-roller mounted on said bar, and a tool-post carrying said tool.

7. In a machine for making insulated helically-wound magnetic coil in layers, a winding-shaft, and means for rotating it, in combination with a slide, a tool comprising a shank secured in a tool-post mounted in said slide and adapted to yield laterally therein, a bar mounted upon said shank and adapted to yield longitudinally, a pressure-roller mounted upon said bar, and a trimming-cutter also mounted thereon, and means for traversing said slide longitudinally in both directions parallel with said shaft.

8. The combination, with the Winding-shaft and means for rotating it and a slide and means for feeding it in a line parallel with the shaft and provided with a tool-post slot, of a tool-post mounted therein and springsin said slot on either side of and engaging with the tool-post.

In witness whereof I have hereunto set my hand this 13th day of March, 1890.

CHARLES E. LIPE.

In presence of- O. W. SMITH, H. P. DENISON. 

